Air-compressor.



J. W. EBERMAN. AIB COMPRESSOR. T

APPLICA entre stretta@ PAL E @QE JOSEPH W. EBERMAN, oF CHICAGO, ILLINOIS, AssIGNoR To nimm/IAN AUTO APPLI- ANCE COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

AIR-COMPRESSOR.

Specification of Letters Patent.

Patented Auw. 30, 1910.

Application led September 28, 1908. Serial No. 455,152.

T o all whom it may concern:

Be it known that l, JOSEPH iV. EBERMAN, a citizen of the United States, residing at Chicago, in the County of Cook and State of Illinois, have invented certain new and useful Improvements in Air-Compressors;

and l hereby declare the following to be a full, clear, and exact description ot' the invention, such as will enable others skilled in the art to which it appertains to make and use the same. i

My invention relates to a novel form and application of a power-driven air cornpressor or pump, the object being to provide an au' compressor and a mounting for -'same adapted to be permanently mounted on the frame ot' an automobile in such a manner that the compressor can readily be put into action and stopped when desired,`

ressor on the line 2 2 of lliof. 1..

One of the most laborious operations in caring for an automobile is that of filling the pneumatic tires with air to the proper pressure, and when it is [desired to use the power of the engine of the automobile to Compress air to the necessary pressure varions difficulties present themselves, for the overcoming of which I have devised the illustrated pump and its mount-ings.

The space available for the mounting of a compressor in the ordinary automobile is very limited, and one of the main objects of my invention is to prod uee a compressor and mounting tor same which would have a wide range oi' adaptability in ils Inode ol application and yet occupy the very least possible space.

In said drawings. 1, is the main side frame of the automobile, 2 is the side bar ot' what is known as the sub-frame, 3 is the tly wheel ot' the automobile engine, and 4 is the cross bar upon which one end of thc engine is mounted. The compressor 5 is mounted in brackets (3, which are rigidly attached to said sub-frame 2, in such a manner as to permit an oscillatory movement to the frame 7 of said compressor for the purpose as will hereinafter be shown, of starting an stopping said compressor. Said compressor 5 comprises a cylinder 8 integral with journals 9 and-10 at its base, by means of which said compressor is mounted in said brackets 6. Between said cylinder 8 and one of said brackets 6 the frame 7 of said compressor is revolubly mounted on said journal 9. A piston 11 is mounted operatively in said cylinder on one end of a piston rod 12, which connects said piston with a crank pin 18 mounted in the face of a wheel 14 which is rigidly mounted on one end of a shaft 15, which is carried in a bearing 16 formed in 'the opposite end of said f ame 7 of the compressor. Said wheel is provided on its periphery with an outer rim 17 of some frictional` material, such as leather, paper or cloth, and is adapted to be brought into operative connection with the periphery of the y wheel 3 or other revolving member of the engine or operative mechanism of the automobile, whereby said wheel will be' revolved, and said piston will be moved back and forth in said cylinder. To press said Wheel 14 against the driving member 3 and hold same in proper Operative Contact, the spring push rod 18 is provided, one end 19 of which is pivotally connected to the free end of said compressor frame 7,l and the other end 2O of which is supported in the frame 1 or other suitable portion of the automobile. It is desirable to press the wheel 14 against the driving member with a yielding pressure, and also to provide adjustment for this pressure so that the contact pressure may be varied to provide for varying conditions. To provide for this, said push'rod 18 consists of a tube or Casing 21, one end of` which is pivotally connected to said compressor frame, and which carries, mounted in same, a compression spring 22. The free end of said tube 21 carries a slid-ing member 23 mounted Within same, the inner end of 100' which bears against one end of said spring 22, and which is prevented from removal from said tube 21 by means of the cotter or pin 24, which. passes through openings in the walls ot' said tube 21, and also through 105 longitudinal slots 25 in the walls of said member The outer end ofv said member 23 is provided with `a central screw-threaded opening 26 adapted to receive one end ot' a screw-threaded rod 27, which is provided on 110 y through holes 30 in the 'be connected,

its outer end with anenlarged head or knob to facilitate the application of endwise pressure to said rod to force said wheel le into contact with said dy wheel 3, in an obvious manner. To hold said wheel le in operative contact, said rod 27 is mounted between its ends in a short tubular bearing 28, which is rigidly mounted in the frame l or other convenient portion of 'the automobile, and a pin 29 is provided which is adapted to pass Walls of said tube, and also through a hole 3l in said rod 27 when said rod has been forced to one limit of its movement. Should the pressure with which said Wheel lll is forced against the ily Wheel 3 not be the proper amount for operating the compressor, it can be increased or decreased by screwing said rod 27 out of or into said member 23 a half turn or more. Said cylinder 8 of said compressor is provided with a'ball checl-valve 32 mounted in a chamber 33 in the base of said compressor, and held against its seat 3e.:4 by means of the compression spring 35. The bearing l0 of said compressor is provided with a central opening 36 communicating with said valve chamber 33, through which the compressed air escapes from said compressor. The outer end of said bearing l0 is provided with a. hose connection 3'?, to which the hose may by means ol which the compressed air may be carried to the tires or' the automobile. To provide means by which the air may enter said cylinder 8 ot' said compressor, a ring of small openings 38 are provided through the wall of said cylinder 8 in such a position that they are 'uncovered by said piston ll as the same reaches the outer limit of its movement, as illustrated in F ig. 2. In operating said compressor, said frame carrying the wheel let is oscillated in said bearings 9 and lO in said brackets 6 until said wheel 14 is brought into operative contact vwith said fly wheel 3 andV is locked in said position by means of the pin Q9. To hold said compressor out of operative contact with said lT wheel a second hole 39 is provided in said rod 2'?, through which said pin mav be passed when said rod 27 is drawnv ack sufficiently, in which position said friction Wheel is out of Contact with said ily wheel. i

l claim as my invention:

l. The combinationwith a driven rotating member, of an oscillating frame, a rotating member carried thereby, a longitudinally-adjustable rod connected at one end with said oscillating frame, a guide through which the free end portion of said rod passes, enacting locking means said rod and its guide to lock said' rod against movement, and a pump operatively' connected with said rotating member and carried by said oscillating frame, said rod serving' to move said frame to throw said disposed on eeaiae rotating members into surfacecontact withv 1ng member carriedthereby, a rod compris-4 ing two relatively longitudinally movable members coupled with each other connected at one end with said oscillating frame, a spring normally maintaining said rod eX- tended to its greatest limit of length, a guide through which the free end portion of said rod passes, coacting locking means disposed on said rod and its guide to lock said rod against movement, and a pump operatively connected with said rotating member and carried by said oscillating frame, said rod serving-'to move said frame to throw said rotating members into surface Contact with each other to actuate said pump, said spring serving to maintain said rotating members y yieldingly meng-agement with each other.

The combination with a driven rotating member, of an oscillating frame, a rotating member carried thereby, a rod comprising `two telescopically movable members, connection between said telescopic members permitting relative longitudinal movement, comprising a transverse springs in the walls of the outer of said tele scopic members, said inner member being provided with a longitudinal' slot or opening through which said pin adapted to pass, a spring mounted within one of said telescopic members and adapted to normally hold said members at one limit of their relative movement, connection at one end of said telescopic members with. said oscillating frame, a vrod having adjustable connection with the opposite end of said telescopic members, a guide through which the free end portion of said rod passes, coacting locking means disposed on said rod and its guide to lock said rodagainst movement, and a. pump operatively connected rwith said rotating member and carried by said oscillating frame, said rod serving to move said frame to throw said rotating members into surface Contact with each other to actuate said pump.

4. The combination with a driven rotating member, of an oscillating frame, a rotating member carried thereby and adapted to be thrown into operative engagement with said driven member to be rotated thereby,a pump, and operative connection between said' last named rotating member and the pump, means operatively engaging said oscillating frame to actuate the same, said means being yieldable and adjustable to increase or decrease the pressure of one rotating member on the other, and locking means adapted to engage said engaging means to maintain said oscillatingvframc in a given position.

5. The combination with a driven rotatpm passing throughA ing member, of an oscillating frame, a rotating member carried thereby and adapted to be thrown into operative engagement with said driven member to be rotated thereby, a rod connected at one end with said oscillating frame and adjusted longitudinally, a pump carried by said oscillating frame and operatively connected to said last named 1'o veating member, und locking means adapted to engage said rod to maintain eaid oseillat- 1G ing frame in a given position.

In testimony whereof I have signed my name' n 'presence of two subscribing Wtnesses. l

JOSEPH W EBERMAN. Witnesses:

EDWARD F. ,VILsoN,

W. A. EBERMAN. 

